What is Memory Compression.exe?

this recently showed up in my process list, taking up a huge amount of RAM. it now doesn't take up so much memory, but it's still over 100Mb.

i do understand memory compression. what bothers me is -

1) it was never in my process list until about a week ago

2) there is a space in the process title - it is literally "Memory Compression.exe"

3) there is no information about it in my task manager (i use Anvir) - no product name, company, executable file, nothing except that the user is NT Authority System. none of the other processes on the list lack any of this information.

4) i can't find any information about it online, which seems incredibly weird. none of the process definition sites i checked even had an entry for it.

so what is it?

Windows 10 Memory Compression

again, i do understand what memory compression is. i'm asking about that particular process, for the reasons i listed above - recent appearance, weird name, no info, etcetera.

This is what you mean?: Why Is Windows 10's "System" Process Using So Much RAM?

Or this: https://support.microsoft.com/en-us/...20Windows%2010

no, that is not what i mean.

"system" and "system idle process" have always been running. i do know what they are, and i know why they use the amount of RAM (and CPU %) that they do.

my question refers to the specific process "Memory Compression.exe"

as seen here:

I know that. I searched for it, but can't find what it means exactly. The 2 I posted is what I found.

ok... i'll leave this marked as unsolved then, so maybe someone else can help.

thanks anyway!

using the compact /compactos:query prompt tells me that compression is turned off.

the process was not listed in the task manager until last week or so. i can't find an online reference a process with that exact name anywhere, and it uses a lot of RAM even when i'm doing other things.



i guess my main concern is that it might be malware trying to look legitimate... (does anyone remember the lsass bug?)